Linked Life Data

2444090

Source:http://linkedlifedata.com/resource/pubmed/id/2444090

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
1987-11-13
pubmed:abstractText
Preexcitation of the atria during reciprocating tachycardia (RT) by a premature ventricular complex occurring when the His bundle is refractory provides direct evidence of the presence of accessory atrioventricular (AV) connection. The impact of ventricular stimulation site and RT cycle length on inducibility of atrial preexcitation was assessed in 38 patients with RT utilizing a single accessory AV connection (right free wall in 5 patients, left free wall in 21 and posterior septal/paraseptal in 12). Extrastimuli were inserted at right ventricular (RV) apical, left ventricular (LV) septal and LV free wall sites. Inducibility of and magnitude of atrial preexcitation increased as stimulation site approached accessory AV connection site. Thus, for RV free wall connections, RV extrastimuli preexcited the atria in 5 of 5 patients, LV septal in 1 of 5 and LV free wall in 0 of 4. For LV free wall accessory connections, RV extrastimuli preexcited the atria in only 3 of 21 patients, compared with 12 of 17 with LV septal and 20 of 21 with LV free wall stimulation. Additionally, the magnitude of atrial preexcitation achieved was related to RT cycle length, diminishing as cycle length shortened. Finally, in a few instances both RV apical and LV free wall extrastimuli failed to elicit preexcitation in patients with a posterior septal connection. Thus, ventricular pacing site and RT cycle length contribute importantly to induction of atrial preexcitation by ventricular extrastimulation technique and should be considered during evaluation of patients with RT in whom accessory AV connections may be present.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0002-9149
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
60
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
811-9
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Role of extrastimulus site and tachycardia cycle length in inducibility of atrial preexcitation by premature ventricular stimulation during reciprocating tachycardia.
pubmed:affiliation
Department of Medicine, University of Minnesota Medical School, Minneapolis 55455.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't